Select the most appropriate meaning of the following idiom. The acid test

Options

A. Throwing acid on someone's face
B. A critical situation or cri sis
C. A fact, event or situation that proves something
D. An unpleasant or offensive test

Answer

C

Explanation

The acid test=the true test of the value of something,ordeal.
Look at the sentence:
It looks good,but will people buy it ?That the acid test.